Before you dive into the data, you need to have a clear idea of what you want to achieve with your referral sources and how you will measure your success. For example, do you need to increase traffic, leads, sales, retention, or loyalty? Depending on your goal, you will need to select the appropriate metrics to track and analyze. Such metrics could include Click-through rate (CTR), Bounce rate, Time on site, Pages per visit, Conversion rate, Customer lifetime value (CLV), and Cost per acquisition (CPA). CTR is the percentage of users who click on your link from a referral source. Bounce rate is the percentage of users who leave your website or landing page after viewing only one page. Time on site is the average duration of a user's visit to your website or landing page. Pages per visit is the average number of pages a user views during a visit to your website or landing page. Conversion rate is the percentage of users who complete a desired action, such as signing up, downloading, purchasing, or subscribing. CLV is the total revenue generated by a customer over their relationship with your business. Lastly, CPA is the average amount of money you spend to acquire a new customer from a referral source.